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. 2014 Oct 23;13:85. doi: 10.1186/1476-069X-13-85

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© Porter et al.; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Census tract level maps of low birth weight (a), preterm birth (b), % African American (c), and % self-paid hospital bill (d) in Jefferson Cty, AL. Locations of coke and steel production facilities with records in the Toxics Release Inventory (TRI) database for at least one year between 1991 and 2010 are identified by black triangles and concentric circles defining 2.5 and 5 km zones surrounding the facilities are illustrated.